/*CREATE TABLE [dbo].[Reserva] (
    [id_reserva]         BIGINT          IDENTITY (1, 1) NOT NULL,
    [id_grupo]           BIGINT          NULL,
    [id_sala]            INT             NULL,
    [horario_entrada]    SMALLDATETIME   NULL,
    [horario_salida]     SMALLDATETIME   NULL,
    [senia]              NUMERIC (10, 2) NULL,
    [saldo]              NUMERIC (10, 2) NULL,
    [fecha_creacion]     SMALLDATETIME   NULL,
    [fecha_modificacion] BIGINT          NULL,
    [id_estado]          INT             NULL
);*/

